str1='11111111'
print(str1)
print('{0}-----{1}-----{2}'.format(1,2,3))
str4='666'
print(f'ww{str4}')
i=j=2
print(f'{i}*{j}={i*j}')
sep=','
print(sep.join(str4))

str5='good good zut'
print(str5.upper())
print("good".center(30,'*'))
str6='原神启动 '
step='!'
print(step.join(str6))